fcntl.h (2024B) - Raw
1 /* O_*, F_*, FD_* bit values for the generic Linux ABI. 2 Copyright (C) 2011-2025 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library. If not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #ifndef _FCNTL_H 20 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead." 21 #endif 22 23 #include <bits/wordsize.h> 24 25 #if __WORDSIZE == 64 26 # define __O_LARGEFILE 0 27 #endif 28 29 struct flock 30 { 31 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 32 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 33 #ifndef __USE_FILE_OFFSET64 34 __off_t l_start; /* Offset where the lock begins. */ 35 __off_t l_len; /* Size of the locked area; zero means until EOF. */ 36 #else 37 __off64_t l_start; /* Offset where the lock begins. */ 38 __off64_t l_len; /* Size of the locked area; zero means until EOF. */ 39 #endif 40 __pid_t l_pid; /* Process holding the lock. */ 41 }; 42 43 #ifdef __USE_LARGEFILE64 44 struct flock64 45 { 46 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 47 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 48 __off64_t l_start; /* Offset where the lock begins. */ 49 __off64_t l_len; /* Size of the locked area; zero means until EOF. */ 50 __pid_t l_pid; /* Process holding the lock. */ 51 }; 52 #endif 53 54 /* Include generic Linux declarations. */ 55 #include <bits/fcntl-linux.h>